ACRykl

摘要： 链接：https://www.nowcoder.com/acm/contest/79/C来源：牛客网 时间限制：C/C++ 1秒，其他语言2秒 空间限制：C/C++ 262144K，其他语言524288K 64bit IO Format: %lld 时间限制：C/C++ 1秒，其他语言2秒 空间限制 阅读全文

摘要： 分析：题目给出一个公式f(n)=n*n+n+41，输入a和b，0<=a<=b<=10000， 问在区间[a,b]中满足f(k)是素数的数所占的百分比。 b的范围不大，直接暴力素数打表即可。 最后输出保留两位小数，卡精度，必须在结果加上1e-5(或者更小)保证精度。 例如，输入 6000 9999，不 阅读全文

摘要： We all know the Super Powers of this world and how they manage to get advantages in political warfare or even in other sectors. But this is not a poli 阅读全文

摘要： You task is to find minimal natural number N, so that N! contains exactly Q zeroes on the trail in decimal notation. As you know N! = 1*2*...*N. For e 阅读全文

摘要： Given two integers, a and b, you should check whether a is divisible by b or not. We know that an integer a is divisible by an integer b if and only i 阅读全文

摘要： Farey Sequence Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 17894 Accepted: 7179 Description The Farey Sequence Fn for any integer n wit 阅读全文

摘要： Sigma Function Sigma function is an interesting function in Number Theory. It is denoted by the Greek letter Sigma (σ). This function actually denotes 阅读全文

摘要： It's said that Aladdin had to solve seven mysteries before getting the Magical Lamp which summons a powerful Genie. Here we are concerned about the fi 阅读全文

摘要： I was trying to solve problem '1234 - Harmonic Number', I wrote the following code long long H( int n ) { long long res = 0; for( int i = 1; i <= n; i 阅读全文

摘要： 链接：https://www.nowcoder.com/acm/contest/70/E来源：牛客网 题目描述 有一只乌龟，初始在0的位置向右跑。 这只乌龟会依次接到一串指令，指令T表示向后转，指令F表示向前移动一个单位。乌龟不能忽视任何指令。 现在我们要修改其中正好n个指令（一个指令可以被改多次， 阅读全文